Restaurant's lettuce wasn't the source of a St. Louis E. coli outbreak, officials say KSDK.comLettuce tests negative in St. Louis County E. coli outbreak KTVI Fox 2 St. LouisMore cases of E. coli recorded in St. Louis County as 2 hospitalized with kidney disease St. Louis Post-DispatchAt least 106 sick, 2 hospitalized by E.